The cycling thread Page 155

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  • MikeP 27 Sep 2012 19:02:30 2,075 posts
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    I've not used hydraulic discs, but can you get fluid contamination that'll cause that, or is it always bubbles that give a soft feel?

    PSN ID: Mikenetic

  • Dougs 27 Sep 2012 19:05:05 69,496 posts
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    The oil can get dirty apparently and I flushed one lot through just in case. Was quite hilarious really. I'm not terribly mechanically minded but I'm determined to sort it - its a basic maintenance task! Half the trouble is slippage off the nipple. Ahem.

    Edited by Dougs at 19:07:58 27-09-2012
  • sport 28 Sep 2012 11:56:59 12,808 posts
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    What do you guys reckon?

    Ebay listing for Giant TCR Frame

    Link - goo.gl/TXwdb

    In description:

    "Small crack near rear brake bracket, this looks to be only in the lacquer and not structural damage."

    Could be taking a chance, but cracks in carbon frames are bad right?

    Edited by sport at 11:57:33 28-09-2012

    Edited by sport at 11:58:09 28-09-2012
  • elstoof 28 Sep 2012 12:04:33 8,306 posts
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    I doubt the lacquer or paint would just "crack" without some damage underneath, chips or flakes fair enough. What the reason for selling? Looks like he's kept the forks so I'm guessing its a junker.
  • sport 28 Sep 2012 12:08:59 12,808 posts
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    elstoof wrote:
    I doubt the lacquer or paint would just "crack" without some damage underneath, chips or flakes fair enough. What the reason for selling? Looks like he's kept the forks so I'm guessing its a junker.
    yeah, kinda my gut feeling too.....hmrpf!
  • elstoof 28 Sep 2012 12:15:46 8,306 posts
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    You can fix carbon successfully though, there's a couple of places that'll do it. HQ Carbon or something up in Norwich do it, a friend had great results with them when they replaced a seat stay.
  • MikeP 28 Sep 2012 15:33:50 2,075 posts
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    IMO there's no way that crack on the right-hand seat stay above the rear brake boss is cosmetic. The lacquer would only crack like that due to underlying movement. It's not a scratch, something has made the underlying structure move in a bad way. You can see the way it's propagated around the joint.

    That looks like a deathtrap, tbh, and probably not economic to fix.

    Edited by MikeP at 15:34:50 28-09-2012

    PSN ID: Mikenetic

  • pistol 28 Sep 2012 16:08:28 13,019 posts
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    sport wrote:
    What do you guys reckon?

    Ebay listing for Giant TCR Frame

    Link - goo.gl/TXwdb

    In description:

    "Small crack near rear brake bracket, this looks to be only in the lacquer and not structural damage."

    Could be taking a chance, but cracks in carbon frames are bad right?

    Edited by sport at 11:57:33 28-09-2012
    Personally I wouldn't risk it Sport.
  • Psychotext 28 Sep 2012 16:15:08 55,032 posts
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    Aye, that's taken a hard hit at some point.
  • sport 28 Sep 2012 16:16:40 12,808 posts
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    Yeah, decided against it. Cheers all
  • urban 29 Sep 2012 15:27:14 11,067 posts
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    Buying one of these tomorrow for 250

    Dad phoned me last night and said he'd been out to see it, the guy even washes it every time he gets back from riding it!
  • sport 30 Sep 2012 11:12:53 12,808 posts
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    Ok - another ebay listing I'm interested in - need forum feedback

    GIANT TCR CARBON FRAME AND FORKS

    link - http://goo.gl/IYcej

    Seems ok - not sure about the clamp comment.




    PS. Please don't snipe me :-(
  • elstoof 30 Sep 2012 13:13:50 8,306 posts
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    There's 2 ways of putting a front derailleur on the frame, clamp on and braze on.

    Clamp on has a ring that goes around the seat tube and is tightened like those things plumbers use on water pipes, the derailleur then bolts onto it.

    Braze on has a mounting point built (used to be "brazed" to steel frames) into the frame and the derailleur bolts to that.
  • urban 30 Sep 2012 15:10:43 11,067 posts
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    I bought that bike at 10am this morning, only just got back from taking it for a 'wee spin' is what I told my old man.

    5 hours later and ooophttt, this is the first racer I've owned. They are so much god damn fun!

    There's a long straight that comes into my town before you hit a hump bridge, there was a little Corsa car dick that accelerated alongside me, realising we couldn't both get over the bridge at the same time he dropped back a little. I dropped down a few to get up the hump, clicked back up when coming down and jesus...It just wanted to go!

    Gave it a little wobble and I came down the other side doing what felt like 40-45.

    Bye bye Corsa



    Gotta watch myself though, I looked back a few times and lost concentration on my balance, got a little wobble. Balance wise they are a lot more sensitive to change.

    Helmet, seat swap and new pedals (horrible cages on it atm) and it'll be a beautiful weekend rider.

    Edited by urban at 15:12:08 30-09-2012
  • MikeP 30 Sep 2012 15:57:08 2,075 posts
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    sport wrote:
    Ok - another ebay listing I'm interested in - need forum feedback

    GIANT TCR CARBON FRAME AND FORKS

    link - http://goo.gl/IYcej

    Seems ok - not sure about the clamp comment.

    PS. Please don't snipe me :-(
    Wouldn't dream of it - very ungentlemanly :)

    Sorry to be the voice of doom and gloom here, but bulging can mean the due to the overtightened clamp the carbon has failed internally. This is one of the problems with CF, the layered structure means it can go wrong in non-visible ways.

    http://www.carbonframerepair.com/index.php/damage-you-cant-see/

    Honestly, the most valuable investment you can make if you buy a carbon bike is a torque wrench.

    Edited by MikeP at 15:58:37 30-09-2012

    PSN ID: Mikenetic

  • sport 30 Sep 2012 16:33:46 12,808 posts
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    hmmm....seems that with carbon frames:

    a) Don't buy used unless you can personally inspect it first.
    b) You need to know your shit about carbon frames when inspecting.

    Think I'll pass. If I had a couple of hundred quid to lose I might have taken a chance but I don't.

    Thanks Mike
  • MikeP 30 Sep 2012 18:02:09 2,075 posts
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    @sport Yeah, it's a tricky one.

    I actually do own a second-hand full carbon bike, but I got it via the CTC forum, and met the guy, inspected and rode the bike before I handed over any cash.

    He had all the receipts and manuals for it, and it was in good nick. It's served me very well for the last couple of years, with some minor maintenance as and when parts have worn out.

    Sadly on eBay there are too many people, innocently or otherwise, who don't clearly describe the condition of their items. I've bought a couple of bikes off there that with some TLC have turned out fine, but they were either beaters or steel frames.

    Personally I wouldn't buy a carbon bike sight unseen, and ideally I'd take a knowledgeable friend along too, preferably one with a level head :)

    PSN ID: Mikenetic

  • mal 30 Sep 2012 18:07:54 22,830 posts
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    @urban Very envious. How small does that top tube go by the seat post? Blimey!

    Cubby didn't know how to turn off sigs!

  • urban 30 Sep 2012 18:31:04 11,067 posts
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    @mal Not bad for 250 is it!?

    Goes from about 5cm tall to 2cm skinny by the seat post. Had a lot of fun on it today, Buying a white bike might actually encourage me to keep it washed!
  • MikeP 30 Sep 2012 21:12:44 2,075 posts
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    I start my week-long frame and fork building course tomorrow. I'm going to try to document the process here:

    http://tubesandlugs.tumblr.com/

    PSN ID: Mikenetic

  • elstoof 30 Sep 2012 21:27:04 8,306 posts
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    Put me on the order list when full production starts old chap :D
  • MikeP 30 Sep 2012 22:35:31 2,075 posts
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    Post deleted

    PSN ID: Mikenetic

  • urban 1 Oct 2012 21:36:16 11,067 posts
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    Is this thread missing like a good couple pages?

    nvm there they are

    Edited by urban at 21:36:36 01-10-2012
  • urban 5 Oct 2012 16:36:45 11,067 posts
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    @MikeP Making for some good reading bud!
  • Psychotext 5 Oct 2012 16:49:54 55,032 posts
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    I'd forgotten about that. I'll have to go back and have a look.
  • elstoof 5 Oct 2012 16:54:04 8,306 posts
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    I discovered that a client of mine over in California is big into cycling, he's sent me some pictures of his latest hand built steel frame and its a beauty. The guy building it is called Brian Baylis, he's been waiting over 5 years as he produces about 4 frames a year. Found some other stuff he's done:

    Here -> http://www.classicrendezvous.com/USA/Baylis_/Baylis_green_Hellenic.htm

    Look at the lugs on that!
  • urban 5 Oct 2012 17:00:23 11,067 posts
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    oooopht lugs!
  • billythekid 5 Oct 2012 17:10:14 11,397 posts
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    Fucking dog has chewed through my front brake hose >:(
  • Psychotext 5 Oct 2012 17:21:22 55,032 posts
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    4 year old kid goes mountain biking, with awesome results: http://www.youtube.com/watch?v=0qmQrEM5rVA&feature=player_embedded

    :D

    Edit - lol, your dog is a retard.

    Edited by Psychotext at 19:29:11 05-10-2012
  • MikeP 5 Oct 2012 21:59:00 2,075 posts
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    elstoof wrote:
    I discovered that a client of mine over in California is big into cycling, he's sent me some pictures of his latest hand built steel frame and its a beauty. The guy building it is called Brian Baylis, he's been waiting over 5 years as he produces about 4 frames a year. Found some other stuff he's done:

    Here -> http://www.classicrendezvous.com/USA/Baylis_/Baylis_green_Hellenic.htm

    Look at the lugs on that!
    Ok, so I can now say with some actual experience under my belt that those lugs are going to involve some ridiculously technical brazing!

    I've almost finished building my frame, hopefully by the end of tomorrow I'll have a frame and fork.

    PSN ID: Mikenetic

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